Printer&#39;s quoin.



Patented Sept. 4, |900. W. G. SLAUSN.

PRINTEHS UUUIN,

(Application led May 25. 1899.)

(No Model.)

V/T/VESSES M. a, W

Nrrnn STATES PATENT OFFICE.

VILLIAM G. SLAUSON, OF OLEAN, NEV YORK.

PRINTERS QUOIN.

sPnoIFIoATIoN forming part of Letters Patent No. 657,252, dated september 4, Ieoo. Applicata nea May 25, 1399. serai no. 718,163. No modem To LZZ whom t may concern: Y

Be it known that I, WILLIAM G. SLAUsoN, a citizen of the United States, residing at Olean, in the State of New York, have invented certain new and useful Improvements in Printers Quoins, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to quoins for printers use.

The object of the invention is to produce a metallic quoin which shall be expanded or spread apart laterally without the necessity of endwise movement of the quoin-body, such as is needed with a wedge, and wherein the spreading device is securely held by friction against backward movement; and the invention consists in details of construction and combination of parts substantially as described.

Figure l is an end view of the quoin. Fig. 2 is a top plan. Fig. 3 is an inner face view of one of the parts of the quoin-body. Figs. 3 and 3b are sections of one of the parts of the quoin on lines 3 and 3b. Fig. 4 is an inner face view of the other part of the quoinbody. Fig. e is a section of Fig. 4 on line 4 et. Fig. 5 is an elevation of the spreaderpinion. Fig. 6 is a bottom plan of the spreader-pinion. Fig. 7 is a perspective view of the quoin. Fig. 8 is a cross-section. Fig. 9 is a view of a modiiication adapted for use as expansible furniture.

A indicates one part of the body of the quoin. This is cast in metal, malleable iron being preferred on account of cheapness. The outer face of the piece is flat. The inner face is beveled or tapered lengthwise for the central portion of its length between end shoulders, and an overhanging flange B projects above this beveled portion to a greater distance. The beveled face A is divided into two steps A'and A2, as shown, having the same bevel in the direction of the length of the quoin, but one of these beveled surfaces projecting' more than the other.

Near each end of the piece A there are laterally-projecting guides or bosses E, which are centrally notched. A lug F projects lengthwise of the body near each end. A projecting rib G overhangs these bosses and V lugs at each side of the body.

The bodypart I is substantiallya counterpart of the partA, with the exception that the inclined inner face I has a rack I* eX- tending inwardly, and the bosses E are dis-` pensed with, the main portion of the part I- being of such length as to lie between the bosses E of part A. Part I has lugs F', and when the two parts A and I are turned face to face a coiled wire or similar spring K at each end of the coin extends from lug F to lug F', and these springs tend to draw the two parts of the body into contact, the lugs E serving as guides to prevent cndwise displacement. The ribs G overhang and protect the springs and bosses.

Between the inclined faces of the two bod y sections a rolling spreader is inelosed. This spreader has a pinion M, which engages the rack I2. Above and below the teeth of pinion M there are cylindrical portions of the spreader connected to the pinion M, one of these cylindrical portions M being of greater diameter than the pinion M and the other portion M2 of less diameter than the pinion. One end of the pinion has a wrench-seat O, preferably a seat for a cruciform wrench or key such as is in common use in printing-ofiices for moving quoins of well-known character. The spreader or expander is inclosed between the body parts Aand I. The cylindrical portions of the pinion have frictional engaged ment with the inclined faces of the body, that part M engaging the face A' and I under rib B and M2 engaging the edge of ribs O. The parts of the pinion which are of greatest diameter are thus partly inclosed in vertical direction between these ribs, andthe pinion can not escape in vertical direction from between the inclined faces of the quoinbody sections, while springs K hold the parts together; but the rotation of the pinion compels it to travel along vthe rack I2 toward the wider or narrower space between the inclined faces of the body portion, according tothe direction of rotation. This travel of the pinion causes the cylinder M to bear on the faces A I and cylinder M2 to bear on the faces C, and as the pinion approaches the narrower space between the two body portions these sections are forced apart. Asthe pinion moves toward the wider space the springs draw the The pim body-sections toward each other.

ICO

ion therefore causesthe parts M'and M2 to act as rolling wedges Yorexpanders:and force vthe body-sections apart when the pinion moves or rotates in one direction. The pinion and its connected cylinders having spread the body-sections A I apart permits them toas-k sume parallel or inclined positionsaccording`L to the direction of pressure against the outer faces of the quoin, the parts M and M2^act1 ing as a fnlcrum. Thus in using the quoin betweena square chase and straight furni' ture or sidesticks-the quoin Pwill vexi-pand, but;V remain rectangular; but between inclined 'surfaces the quoin will -become moreorlessf wedge-shaped.

lAs the bearing-surface M' isnt-greater diameter than the pinion M there fis greaterj friction on this surface than lonthe pinion, L and therefore no jar or vibration'o'f'thepress can rotate the pinion to lunlockfthe quoin.` The cylinder is under sidewise pressure when the-qu'on is expanded; but this pressure is merelya crushing and lnot a rotatings'train, 2 andthe quoin cannot be unlocked `by `such'- stra'in. There 'bein g yno longitudinal movement of 1 thefcoin-body in locking vor :unlocking the? form `there is no 'tendency lto skew the? form orchase, and the quoin can operatein a?. smaller lengthwise space than yany fquoin; which operates by a lengthwise wedge moven ment. The sp1-ings Klare not necessaryto Athe-op-E eration of fthe quoin,las the Iparts A I and;- thespreaderwould maire an operative quoin' without them. They are le'l-ficient-for hold-g ingthe parts of the quoin in Itheir'operative relations. In the modification Fig. rS, the fparts Axi and 1X are practically duplications of the:I quoin-hereinbefore-described,the'partsibeing. extended'to form an lelongated-quoin or eX- pans'ionfurniture. The-direction of the lin; clines is reversed at opposite ends ofthe furniture. Bowel-'pins P rP -maytake the .placer of bosses E E. lThe parallel central ipart' of the :furniture may be kof any reasonable length. In other respects this furniture :is: practically a duplication of the quoi'n here-2 inbefore described. This Ymodified form ofi quoinfmay form a piece of Lbeveled furniture by advancing one spreader and retarding the other or may ibe rectangular by putting the` spreaders in complementary positions. -n nearly Vall forms of wedge-quoins thequoinsfare liable vto .loosen `or slip by vreason Q of the vibration of the press. Even where the quoins do -not actually loosen the :pressman vfeels'compelled to stop-his press from time l-to time `and test the tightness of vhis: lock-up. The upper and lower surfaces of the spreader lbeing of unequal-size the fric-f 1 tional contact of 4these parts of ythe-spreaderl with'the bearing-faces of the quoin-bodyisof` adifferent character at the `top and bottom@ of ithe spreader-that is, Awhen the spreaderl press. vknownlquoins is -that while intended to be isrotated ineither direction one of the cylindrica'l surfaces has a different surface speed from the speed of the other cylindrical surface, and this differential speed When moving tends to give such a frictional contact as to prevent the movingof the spreader. The

Wrench gives va means of moving of suflicient power to overcome the resistance; but a test -of Yconsiderable severity shows no tendency for `the spreader to slip in actual use on a Another objection to several welloperated bya ,Wrench they may be driven by a shooting-stick, and-frequently are so driven,

`tothe injury of the imposing-stones, furniture, &c. My quoin cannot be operatedby a shooting-stick, whichis one'ofits'advantages.

1. flu-a quoin, twometallicvbody-pieceshavA ing -oppositely-inclined inner faces, a yrolling spreader between such inclined faces Land bearing on the-same, means Vfor moving .the spreader lengthwise ofthe quoin, and springs connecting the body-pieces to each other, -in combination substantially as described.W

,2. =In La `quoin, the body-sections hay'ing overhanging ends, springs connected to both of the :body -sections "between these 'overhangs-anda spreader Ibetween-and operating toexpandfthe'body-piecesall combined substan'tiallyfas described.

3. lina quoin, the body-pieces y'having inclined inner faces and valongitudinally-moving rolling spreader vbetween the same,`later ally-projecting guides from one bodypiece engaging -theother piece, andmeansfor-closing the body-.pieces onto the spreader, all combined.

4. 'Inaqnoinnhebody-sections having each an upper and a lower inclined bearing-surface, 'and a lrolling spreader having cylindrical surfaces of unequal diameterengaging such bearing-surfaces, said spreader having meansforfforcing it lengthwiseof ythe inclined bearing-surfaces tospread the sections apart, substantially as described.

5. AIn a lquoin, the bodyfportionseac'h:having a plurality of inclined bearing-surfaces extending in -opposite directions, aspreaderroo IIO

IIS

nected together, one of said pieces havinga ing on the spreader, substantially as delongitudinal rack, and a generally-cylindrical scribed. I0 spreader-piece interposed between the bev- In testimony whereof I affix my signature eled surfaces and having teeth engaging the in presence of two Witnesses.

rack, whereby the rotation of the spreader WILLIAM G. SLAUSON. causes it to move lengthwise of the rack, thus Witnesses:

spreadingvthe body-pieces but permitting J. I-l. THOMPSON,

their inclined relation to each other or a rockl JOHN M. LARKIN. 

